package edu.nf.supermarket.service;

import edu.nf.supermarket.entity.Commodity;

import java.util.List;

/**
 * @author yjj
 * @date 2025-05-23
 */
public interface RecommendService {
    /**
     * 根据用户购买记录推荐商品
     * @param userId
     * @return
     */
    List<Commodity> recommend(int userId);
}
